Because of the importance of space superiority, the Air Force published new doctrine on 2 August 2004: Air Force Doctrine Document (AFDD) 2-2.1, Counterspace Operations. Gen John P. Jumper, US Air Force chief of staff, asserts that "space superiority is as much about protecting our space assets as it is about preparing to counter an enemy’s space or anti-space assets" (1). The new publication (pub) defines key terms characteristic of counterspace operations and highlights factors that Airmen must take into consideration when they plan/execute those operations.